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  5. 新型組織蛋白去乙醯酶抑制劑AN對於腸道黏膜炎之抗發炎作用探討
 
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新型組織蛋白去乙醯酶抑制劑AN對於腸道黏膜炎之抗發炎作用探討

Other Title
Investigation of the Anti-inflammatory Effects by New Histone Deacetylase Inhibitor AN in Gastrointestinal Mucositis
Type
thesis
Date Issued
2015-06-23
Author(s)
洪建宏
Advisor
謝政穎
蕭哲志
Subjects
系所名稱:醫學科學研究所
Description
學位別:碩士
語文別:中文
指導教授:謝政穎
共同指導教授:蕭哲志
口試委員:黃聰龍;陳彥州;潘秀玲
中文關鍵字:化療藥物;腸道黏膜炎;組織蛋白去乙醯酶抑制劑
英文關鍵字:Mucositis;Cisplatin;HDAC inhibitor;LPS;IEC-6
Abstract
口腔及腸胃道黏膜炎在化療過程中屬嚴重的副作用,常有不良的併發症,嚴重時會中斷治療,影響治療結果,甚至造成病人死亡。目前黏膜炎治療方式相當有限,因此,研究開發此類抗黏膜炎成分具有重要之臨床意義與運用價值。先前的研究結果顯示,新型HDAC抑制劑AN可以藉由ERK訊息路徑抑制人類單核球細胞的發炎反應,本次研究將探討新型HDAC抑制劑AN是否可以抑制腸道黏膜炎之發炎反應。研究實驗結果發現,AN在腸道上皮細胞(IEC-6)具有HDAC抑制作用,且不會使癌細胞增生,也不像SAHA對癌細胞與正常細胞具有嚴重的細胞毒性,然而AN並不會反轉Cisplatin於IEC-6細胞造成之細胞毒性。進一步結果中發現,AN可以抑制LPS誘導所釋放的發炎介質IL-6、MCP-1與TNF-?恁C活體動物實驗中,根據病理組織評估結果顯示,AN能減少Cisplatin對於小鼠腸道結構與微絨毛的損傷。進一步觀察小腸黏膜組織的MPO活性及組織免疫染色,AN能有效抑制Cisplatin所誘發之發炎反應。此外,將microarray結果利用系統生物學分析軟體暨資料庫(IPA)分析,結果暗示AN會影響ERK所調控相關路徑。接著,利用西方墨點法探討AN在IEC-6作用的詳細訊息路徑,發現AN對於IKK、p65及p38無明顯作用,但會影響TPL-2/MEK/ERK及AKT等訊息蛋白,進而減少發炎介質釋出及降低腸道發炎反應。本研究顯示,AN可能透過調控MEK/ERK之相關訊息路徑進而改善MCP-1、TNF-?捋PIL-6的生成,可做為抗發炎藥物之研發之新選擇。
URI
https://203.71.86.71/handle/123456789/57192

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